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Norway's 'troll penis' rock re-erected
Are not men at least as obsessed about questions of size as women? Relative to body size, the human penis dwarfs that of bonobos, common chimpanzees, gorilla and orangutan. Genitalia tend to vary more dramatically than almost any other physical trait.
Evolution of penises
Critics of this type of study love to point out that women usually decide if they will have sex with a man well before ever sighting his genitals. A first-time disappointment can rapidly become a one-time-only thing. Expert Database Find experts with knowledge in: Relative to body size, the human penis dwarfs that of bonobos, video clips of erecting penises chimpanzees, gorilla and orangutan. And yet female choice - across the animal world - represents one of the most potent forces driving the evolution of male traits.